It's like flossing. Everyone knows they should do it, and yet we still fail to back up our computers. Thankfully, the Apple Time Capsule will now do it for you by automatically and wirelessly synching up with all the computers in your house. With a combined wireless router and hard drive, the Time Capsule works with Time Machine software (built in to all Macs with OS X Leopard) to seamlessly and effortlessly back up your computer on a regular basis. Next to Lipitor, it may be the best prevention for heart attacks we've heard of. Prices from $299 at apple.com